“…General anesthesia could mask early signs of hyponatremia and water intoxication such as bradycardia, hypertension, headache, nausea, and mental status change. [2,8] In our patient, who had general anesthesia, we did not detect water intoxication and hyponatremia until cerebral edema developed, which presented with seizures. Hyponatremia is associated with convulsions and coma.…”